[antlr-interest] Grammar issue

[Kevin J. Cummings]

On 03/23/2011 05:41 AM, maulattu wrote:
> Ok Jim, let me understand if I'm missing something with a short example.
> Take this little section of the grammar
> 
> parameter_with_index
>     : parameterName = 'PARAM_' parameterIndex '=' numericLiteral
>     ;
> 
> 
> It shall be changed to
> 
> parameter_with_index
>     : parameterNameLiteral  parameterIndex separator numericLiteral
>     ;
> parameterNameLiteral
>     :    PARAM_TOKEN
>     ;
> separator
>     :    SEPARATOR_TOKEN
>     ;
> SEPARATOR_TOKEN
>     :    '='
>     ;
> PARAM_TOKEN
>     :    'PARAM_'
>     ;
> 
> is it right?

No,

prameter_with_index
	: PARAM_TOKEN parameterIndex SEPERATOR_TOKEN numericLiteral
	;

PARAM_TOKEN
	: 'PARAM_'
	;

SEPERATOR_TOKEN
	: '='
	;

should be sufficient.  No need for the extra 2 rules.

> Thank you all for your precious suggestions :)

-- 
Kevin J. Cummings
kjchome at verizon.net
cummings at kjchome.homeip.net
cummings at kjc386.framingham.ma.us
Registered Linux User #1232 (http://counter.li.org)